Friday, 5 January 2018

10 Things That Causes Corneal Ulcer, Know Them Now


A corneal ulcer is a true emergency. Without treatment, the ulcer can spread to the rest of your eyeball, and you can become partially or completely blind in a very short period of time. Your cornea may also perforate, or you could develop scarring, cataracts , or glaucoma . Most cases of corneal ulcer are due to a bacterial infection that invades the cornea often following eye injury, trauma or other damage.


Causes Of Corneal Ulcer
The main cause of corneal ulcers is infection, below are things that can cause Corneal Cancer :

1. Fungal infections are an unusual cause of corneal ulcers and may happen after injury with organic material such as branches or twigs. People who contract this type of infection have been treated with steroid eyedrops or are wearing contact lenses which are not properly disinfected.

2. Herpes simplex keratitis : Herpes simplex keratitis is a viral infection that causes repeated flare-ups of lesions or sores in the eye. A number of things can trigger flare-ups, including stress, prolonged exposure to sunlight, or anything that weakens the immune system. Viral infections are also possible causes of corneal ulcers. Such viruses include the herpes simplex virus (the virus that causes cold sores ) or the varicella virus (the virus that causes chickenpox and
shingles ).

3. Acanthamoeba : These common parasites can enter the eye and cause Acanthamoeba keratitis, a very serious eye infection that can result in permanent scarring of the cornea and vision loss. Acanthamoeba microorganisms are commonly found in tap water, swimming pools, hot tubs and other water sources.

4. People who wear contact lenses are at an increased risk of corneal ulcers. In fact, your risk of corneal ulcerations increases tenfold when using extended-wear (overnight) soft contact lenses. Extended-wear contact lenses are those contact lenses that are worn for several days without removing them at night. Contact lenses can damage your cornea in many ways.


5. Bacteria may be on the lens or in your cleaning solutions and, thus, get trapped on the undersurface of the lens. If your lenses are left in your eyes for long periods of time, these bacteria can multiply and cause damage to the cornea.

6. Disorders that cause dry eyes can leave your eye without the germ-fighting protection of tears and cause ulcers.

7. Chemical burns or other caustic (damaging) solution splashes can injure the cornea

8. Disorders that affect the eyelid and prevent your eye from closing completely, such as
Bell's palsy, can dry your cornea and make it more vulnerable to ulcers.

9. Scratches on the edge of your contact lens can scrape the cornea’s surface and make it more open to bacterial infections.

10. Tiny tears to the cornea may also cause corneal ulcers. These tears can come from direct trauma; scratches; or particles, such as sand, glass, or small pieces of steel. Such injuries damage the cornea and make it easier for bacteria to invade and cause a serious ulcer.


Author: Richard Smith